ABSTRACT
<p><b>OBJECTIVE</b>To analyze the radiogenic distribution in the sacrum in whole-body bone scanning.</p><p><b>METHODS</b>A total of 212 patients receiving whole-body bone scanning without any explicit bone metastases were divided into different age and gender groups. The radioactive distribution in the sacrum in whole-body bone scanning was analyzed statistically.</p><p><b>RESULTS</b>Of these cases, 31.1% presented with thin radioactive distribution in the sacrum and 11.3% exhibited increased radioactive distribution. Normal radioactive distribution in the sacrum was found in 57.6% of the cases. In both male and female elderly patients (>70 years), the rate of normal radioactive distribution in the sacrum was obviously reduced with increased rate of thin radioactive distribution. The female elderly patients showed higher rate of increased radioactive distribution in the sacrum than male elderly patients.</p><p><b>CONCLUSION</b>The radioactive distribution in the sacrum is similar between female and male patients. Elderly male patients over 70 years have generally thin radioactive distribution in the sacrum due to the presence of osteoporosis, which is also associated with latent fracture of the sacrum to result in increased radioactive distribution in the sacrum in whole-body bone scanning.</p>
Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Neoplasms , Diagnostic Imaging , Pathology , Radionuclide Imaging , Sacrum , Diagnostic Imaging , Spinal Neoplasms , Diagnostic Imaging , Technetium Tc 99m Medronate , Pharmacokinetics , Whole Body ImagingABSTRACT
<p><b>AIM</b>The purpose of this experiment was to investigate the cardiac physiological characteristics for adaptation to high-altitude hypoxia in chickens.</p><p><b>METHODS</b>Tibetan, Dwarf Recessive White and Shouguang chickens were fed at low-and high-altitude, and measurements were made in heart weights, lactic acid (LA), lactate dehydrogenase (LDH), and succinate dehydrogenase (SDH) at the age of 10 weeks.</p><p><b>RESULTS</b>The results showed that Tibetan chickens at high-altitude had lower heart weight and LA content, and similar LDH activity, and higher SDH activity when compared to Dwarf Recessive White and Shouguang chickens.</p><p><b>CONCLUSION</b>It was concluded that the cardiac mechanisms of high-altitude hypoxic adaptation in Tibetan chickens were increasing neither heart weight, nor level of anaerobic metabolism, but the higher SDH activity was significant to the adaptation. The SDH was a symbol enzyme for hypoxic adaptation in Tibetan chicken.</p>